'SearchableNamespaces': An option to modify which namespaces are searchable.
&$arr : Array of namespaces ($nsId => $name) which will be used.
+'SelfLinkBegin': Called before a link to the current article is displayed to
+allow the display of the link to be customized.
+$nt: the Title object
+&$html: html to display for the link
+&$trail: optional text to display before $html
+&$prefix: optional text to display after $html
+&$ret: the value to return if your hook returns false
+
'SetupAfterCache': Called in Setup.php, after cache objects are set
'ShowMissingArticle': Called when generating the output for a non-existent page.
Special:Upload.
$form: The SpecialUpload object
-'SpecialVersionExtensionTypes': Called when generating the extensions credits,
-use this to change the tables headers. Deprecated since MediaWiki 1.17, use the
-ExtensionTypes hook instead.
-$extTypes: associative array of extensions types
-
'SpecialVersionVersionUrl': Called when building the URL for Special:Version.
$wgVersion: Current $wgVersion for you to use
&$versionUrl: Raw url to link to (eg: release notes)